Caso Venecia

Caso Venecia

1. site characterization

   • the key lagoon soils characteristic is the presence of a predominant silt fraction, combined with clay and/or sand forming a chaotic interbedding of different sediments.
   • Within a limited area, a series of investigations that allows to measure also the shear wave velocity Vs
   • Because of the intrinsic difficulties related to the spatial heterogeneity of the lagoon deposits and of the predominant presence of difficult to sample soils, it was decided to build up an instrumented trial embankment located at Lido-Treporti inlet to investigate the lagoon subsoil response to loading at large scale and to assess the relevant geotechnical design parameters accounting for the macrostructural feature of the deposits.

2. BARRIERS TO CLOSE THE LAGOON INLETS

   • The MOSE mobile barriers system, currently under construction, is the most important and challenging part of the interventions being implemented to safeguard Venice against high tide.
   • APPENDIX A: SOIL MODELS EMPLOYED IN SETTLEMENTS CALCULATIONS
     • -Inner, Intrinsic Surface (IS), inside which the viscous phenomena are inhibited.
     • -External, Characteristic Surface (CS), which depends on depositional and post-depositional phenomena processes experienced by the material